[Grok-dev] Cancel button in forms

[Sebastian Ware]

I might have jumped the gun here...

Mvh Sebastian

5 maj 2008 kl. 15.18 skrev Sebastian Ware:

> This is not necessary. I only do:
>
>    @grok.action('Cancel')
>    def edit(self, **data):
>        self.redirect(self.url(self.context))
>
> and it works without validating input.
>
> Mvh Sebastian
>
> 5 maj 2008 kl. 13.41 skrev Godefroid Chapelle:
>
>> Hi all,
>>
>> I supposed I must have missed the simple way to have a working  
>> cancel button with grok forms.
>>
>> In case this simple way does not exist, I suggest to integrate the  
>> null_validator (taken from plone)
>>
>> """
>> def null_validator(*args, **kwargs):
>>   """A validator that doesn't validate anything.
>>
>>   This is somewhat lame, but if you have a "Cancel" type button that
>>   won't want to validate the form, you need something like this.
>>
>>   @form.action(_(u"label_cancel", default=u"Cancel"),
>>                validator=null_validator,
>>                name=u'cancel')
>>   """
>>   return ()
>>
>> class AddWord(grok.AddForm):
>>   grok.context(Lesson)
>>   form_fields = grok.AutoFields(Word)
>>
>>   @grok.action('Cancel', validator=null_validator)
>>   def cancel(self):
>>       self.redirect(self.url(self.context))
>> """
>>
>> -- 
>> Godefroid Chapelle (aka __gotcha) http://bubblenet.be
>> _______________________________________________
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>> Grok-dev at zope.org
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>
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